All the scientists have always considered the aggregation of new knowledge an important character of Sciences. In other words, we make all our efforts to solve our theoretical and practical problems referring to our own findings and others’ experiences. There are many cases, which justify that in a specific subject in one country or more, the scientists have reached one unanimous result or visa versa to opposite results. The questions here is that how we can look beyond all these homogenous and heterogeneous results and combine them through a scientific method. The Ultra–Analysis method is in fact a way to help the researchers combine the results in a quantitative basis. The paper tries to review this method and other ways of combining the results of various researches.
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